Malicious PDF — malware analysis report

Static analysis result for SHA-256 72654eca74a6e828…

MALICIOUS

PDF

48.9 KB Created: 2020-11-01 07:09:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e8cd5b8ffa9b85a50dabf06a7689bdb2 SHA-1: 2b6fe442ad8de60d2c8a09b381c0800b70cde363 SHA-256: 72654eca74a6e828f79427b3fcfd06e78a292df1bfdb93429f0b39ecb0bf7f02
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ggtraff.ru/aws?keyword=minecraft+commands+teleport+to+coordinates In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366316/normal_5f875b3ee39b6.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/zebapesuluboxaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386591/normal_5f9e3ec931e11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368223/normal_5f906a8da0f11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390092/normal_5f98f2b33a78b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392664/normal_5f962e88a8ec7.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8377/4614/files/90146708918.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93f27ffb-84d6-49d5-b937-55956da63358/14591418127.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/vintage_san_diego_chargers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f98bae37-64b7-4235-b440-5837913e81d8/elsword_rose_classes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/112a840d-1473-4f7c-bdf8-83ac4002b4df/navaxegurudaxi.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/luvadafeve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79fee2bb-c775-4ea2-9f17-60035531c1b6/16258049131.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01acdb38-29b2-46dc-b57d-9b8ed5182120/82732867440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2815/1959/files/bendy_and_the_ink_machine_apk_full.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62BB 1964 bytes
SHA-256: 1f017765e4f71d7fb65f7aa6af4a21ee02481a019da675d4246e18d37a938ded
font_01_sfnt_off00006bc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC9 5092 bytes
SHA-256: df30e7a5ac6b0c9eb18df9e267365fa1859db31d633465e906a4fd63bbbdf615
font_02_sfnt_off00007cfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFB 13444 bytes
SHA-256: 0e5e86e9420d4bb55b3447fa5a467f697673ab354b49852e5fce086ab23d1342
font_03_sfnt_off0000a7c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7C5 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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